Manufacturing method of plastic stool

The manufacturing method of the plastic stool is as follows:

The raw material is a kind of plastic particles, mainly polypropylene (PP) and polyethylene (PE).

Then through some plastic models, processing and molding.

Please remember that the thick flowers of plastic products are very bad for your health, especially for children. Under 6 years old, try to stay away from the plastic factory.

Polypropylene is a thermoplastic resin polymerized from propylene. It is resistant to heat and corrosion. It has a low density and is the lightest general plastic. But it is easy to age. The melt mass flow rate is usually 1~ 100. Polypropylene with low melt flow rate has good impact resistance, but low tensile strength. For materials with the same MFR, the impact strength of poly type is higher than that of homopolymer type. Due to crystallization, the shrinkage of PP is quite high, generally 1.6~2.0%.

Polypropylene is a non-toxic, odorless, tasteless, milky white, highly crystalline polymer with a density of only 0. 90-"0.91g/cm3" is one of the lightest plastics at present. It is particularly stable to water, and its water absorption in water is only 0. 0 1%, and the molecular weight is about 80,000-1.5 million. Moldability is good, but the shrinkage rate is large (1%~2.5%). Thick-walled products are prone to sag, and it is difficult to meet the requirements for some parts with high dimensional accuracy. The product has good surface gloss and is easy to color.